<!DOCTYPE html>
<html lang="en">
<head>
  <meta charset="UTF-8">
  <meta http-equiv="X-UA-Compatible" content="IE=edge">
  <meta name="viewport" content="width=device-width, initial-scale=1.0">
  <title>Document</title>
  
</head>
<body>
  <div id="app">
    <!-- 简单循环 -->
    <ul>
      <li v-for="item in arr">
        {{ item }}
      </li>
    </ul>
    <!--  
      声明循环下标
     -->
     <ul>
      <li v-for="(item, index) in arr">
        {{item}}
    
        {{index}}
      </li>
     </ul>

     <!-- 循环对象 -->
     <ul>
      <li v-for="value in person">
        {{value}}
      </li>
     </ul>
     <ul>
      <li v-for="(value, key) in person">
        {{value}}
      -->
      {{key}}
      </li>
     </ul>
     <ul>
      <li v-for="(value, key, index) in person">
        {{value}}
        -->
        {{key}}
        -->
        {{index}}
      </li>
     </ul>
  </div>

  <script src="./vue.global.js"></script>
  <script>
    const { createApp } = Vue;
    const app = createApp({
      data(){
        return {
          arr: ['a', 'b', 'c', 'd'],
          person: {
            name: '小明',
            age: 18,
            gender: '男'
          }
        }
      },
      

    });
    app.mount('#app');

  </script>
</body>
</html>